Joint for split rims and method of making the same



- 1,6325 J 1927' E. R. JACOB: so

I JO INT 1 01i SPLIT RIMS AND METHOD OF MAKING THE SAME Filed Jun 26. 925

INVENTOR Emil R. Jacobi m 3- eet q f soe M l i JApKsoN lv liICl-llGAN.

f constructing'such join J I Patented .lunel l", i

This invention relates to improvements in joints for the connecting ends of split rimsv for autoniobiletires. v -The objects'ofthe inventionare:

-First, to provide an 1n1proved'jointfo1" a spllt rlm ln which an accurate fit s secured between the, ends of the rim," eliminating the 'necessity' for close tolerances atfthat point.-

. -Se on1d ,{to ,pliovide in 'such a joint a means of accuratelyfitting the meetingendstof the split rim totake up all slack in the coupling a and :prevent pivoting or cantingof the rin atthat point. 1 I

Third,to provide an .improvedunethod of Frther' objects and objectslrelating to vdetails and economies of'constructionand operationwilldefinitelyappearjtrom the de y =3 tai'l'ed descri tion to followv j f j I accomph'sh the objects of m-y invention',

. by the devices *and means described in i the 3 following" specification. The invention clearly definedand pointedout inthe claims; Structures which are. preferred embodiments of my invention are -vfully illustrated:

in they accompanying drawing, forming a r FigQyIII isa detailside elevation view or the meeting; ends of the. rim in'spaced re- {-lation.

- Fig.IV is a detail viewsi'milar to Fig.

'I, of amodification showing thecontacting parts at "the extreme outside of the rim -1nake the illustration clear;

ltolerancelon a 30 inchwheel is p v g g'of an inch. -"I't isthe objectto secure as i 1eornrfronfsrnrrfniMsAnD METHOD or MAKING same.

Applicationfiledjunefzfi, 192 5. .Ser ial no.'ae,715.

the same.

Fig. .XI 'is ja modification of thestructure} appearing in Fig. X in which projecting die;

provided 1 to coact With the portlons are punches. I I p V p c 1 I t li wlng similarinumerals ofrefseveral views. The parts of the drawing will be identified by .their numerals .Ofref-Q i mem Assrenon ro Heaths coMPanY," or

the position of die and punches forforming' ere'nce refer: to similar parts throughout the erencev 1 and 2 are the n'ieeting ends offthe I split rim'. 3 is-the tie plate or .bar, secured by countersunk rivets' 4 to the en'd'l. #5.:is theljatt'aching 'screw tl'lreaded into tubular stud..5 rivetedtto the ri1nend2. "The rim i ends are made with atolerance, indicated at 6 where it isshown much exaggerated to i The actual substantially perfectfit as possible but such variation or.

tolerance is. permissible.

WVhen the rim is assembled; it is held in correct position and -alignmenti by suitable I means, and .a punch,* preferably Wltll a square or angular end' cmoperating with a 1 suitable opposed die,is struck againstthe Joutersurface and ndents "and upsets the metal from both,v meeting ends and? 2 toward each other, entirelyfilling thespace permitted bythe tolerance and making a perfect .fit afterfthe rim has thus been coin V pletely assembled The metal is m'erely up set by the stamping action of theypunchfl '90 i where the stud extends through the tie and of the rim to-I This takes all slack outfl'of the coupling rigidly couples the split ends gether, preventing all canting.

In Fig. X, I show the arrangement of die flanges. Y Y i I p I I p Fig. V is a sideelevation iew of the parts appearing in FigcIV. p L v Fig. VI is adetail side elevation view of the rim endsillustrated in, Figs. IV and, JV, separated from each other. j y 7 I p Fig. VII 's ajplan view similarlto h I of a still further *modificatiol'i, showing j f. the contactingparts midway of the flanges. p p Fig. VIII. is a. sid'efelevationview of the receive the stroke of the punch, Whichfin (structure appearing in Fig. VII. ishesthefiob by closing upset; metal across ,Fig. IX'"i :a1deta il side elevation view of the tolerance space.

theseparated end's of the rim .asillustr'ated" In Fig. *-XI; I "injFigsxVIIandVI'II. I v p y Fig. X is an elevation view,*ofone of the 5 f rim ends in process of manufacture, showing 11 and a pairof punches 12 for doing this work; 1 on the usual Weight of metal made I use of insuchtrans-splitrims. The die 11.- 1

the "punch holder to co-oper'ate with the die. The die is conformed to receivetheprojects j-ection 14is on the; die 13', corresponding'to is',of course, secured to the bed ofa punch,

press and a pair ofpunches12 is put in H ing beads on the rim which locates the samefjj I effectively inpositionand in alignment tof' p y I show the preferredmeans V 1 and method for heavy rims inwhich a pro I the end of each punch 121above, whereby the i metal is depressed and upset from both sides, which is very effective on the heavy metal.

The modifications illustrated in Figs. IV, V and VI show the projections at 9 at the outer ends of the flanges of the rims. The modifications in Figs. VII. VIII and IX show the projections 10 midway of the flanges ateach side of the rims.

In the modifications shown in Figs. IV, V and VI a single projection is shown on each rim end and in symmetrical relation to the projection opposed. This can he formed by locating the punch so that it does not overlap but comes in proximity to the tolerance space between the ends.

In Figs VII, VIII and IX the projections are shown midway of the flanges, the end 1 being left plain and the projections being both formed on the rim end 2. The projections can be formed symmetrically. but there is a distinct advantage in forming them in the preferred manner illustrated in Figs. I, II and III.

The location in Figs. I II and III permits very readily of the use 01 a power punch without the necessity of elaborate forming dies for the purpose, and because the punch overlaps the joint, a very small amount of metal only needs to be dis-placed from each rim end. The joint can thus be formed more readily. The other forms are modifications which may be formed by punch as indicated.

I have thus described my invention in de tail. I desire to claim the same specifically as illust 'ated, and broadly as generally disclosed. and also the method of forming this joint by the use of punch and die methods, as pointed out in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A split rim joint comprising the meeting ends, and a tie bar detaohably coupling the same, the metal of said meeting ends being upset at each side of the tie bar from each rim end, forming contacting projections into the space therebetween to tighten the joint. I 2. A split rim joint comprising the meeting ends, and a tie bar detachahly coupling the same, the metal of said meeting ends being upset at each side of the tie bar, forming contacting project-ions into the space therebetween to tighten the joint.

A split rim joint comprising the meeting ends, and a tie bar detachably coupling the same, the metal of said meeting ends being upset from each rim end forming contacting projections into the space therebetween to tighten the joint.

-CL. A split rim joint comprising the meeting ends, and a tie bar detachably coupling the same. the metal of said ends being formed with an upset contacting projection.

The method of manufacturing a split rim joint comprising coupling the meeting ends together as by a tie bar. and then subjecting the meeting ends of the joint to the stan'iping action of punch ends at eachside of said tie bar to upset the metal and form contacting projections therebetween thus making a close fitting joint.

6. The method of manufacturing a split rim joint comprising coupling the meeting ends together by a tie bar, and then subjecting the metal to the stamping action of a punch to upset the metal and form a contacting projection therebetween.

7. The method of manufacturing a split. rim joint comprising coupling the meeting ends together. and then subjecting the metal to the stamping action of a punch and die projection to upset the metal and form a contacting projection therebetwcen making a close fitting joint.

In witness whereof I have hereunto set my hand.

EMIL R. JACOBI.

thus 

